4 ms·
It gets cold at night not because of fog, but because of lack of humidity. Same reason the desert is like that. Same reason the surface of the moon is 107°C dur
by raldi 14y ago
It gets cold at night not because of fog, but because of lack of humidity. Same reason the desert is like that. Same reason the surface of the moon is 107°C during the day and -153°C at night.
- troels 14y agoHow can it be foggy and lack humidity?
- raldi 14y agoWho said both happen at the same time?
- gdubs 14y agoNot my area of expertise, but from my understanding fog is a "local" phenomena, not large enough to dramatically effect temperatures the way that atmospheric pressure / humidity can.
- stevewilhelm 14y agoMost of the bay area is chaparral. The Central Valley is generally ten to twenty degrees hotter than the coastal areas during the summer. The hot air literally sucks the cold wet marine air inland right across SF during most summer days. That is why the best SF weather is early spring and late fall when the temperature difference between the Central Valley and the SF Bay Area is minimal, and their is much less fog. When the summer sun goes down, the fog evaporates in the dry air and the temperature drops.
- deleted 14y ago[deleted]